Answer:
Nutritional guidelines are important mostly for those training for competitive swimming, and those engaging in the sport for health reasons. To get the most from any physical training, one needs to eat right, although one can enjoy and benefit from swimming irrespective of one's diet.
The safety measures and emergency procedures are needed because, particularly in open water, danger can develop in seconds, and turn into death in minutes. Drowning is an inability to breathe, and you definitely don't want to improvise your response when someone can't breathe.
Explanation:
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